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US6856469B2 - Lens driving device - Google Patents

Lens driving device Download PDF

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Publication number
US6856469B2
US6856469B2 US10/695,409 US69540903A US6856469B2 US 6856469 B2 US6856469 B2 US 6856469B2 US 69540903 A US69540903 A US 69540903A US 6856469 B2 US6856469 B2 US 6856469B2
Authority
US
United States
Prior art keywords
lens
driving
retaining position
moving body
driving device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US10/695,409
Other languages
English (en)
Other versions
US20040130808A1 (en
Inventor
Hidekazu Yoneyama
Yuji Fujita
Takahiro Azuma
Shinichi Kudo
Toshifumi Tsuruta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Instruments Corp
Original Assignee
Sankyo Seiki Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sankyo Seiki Manufacturing Co Ltd filed Critical Sankyo Seiki Manufacturing Co Ltd
Assigned to SANKYO SEIKI MFG. CO., LTD. reassignment SANKYO SEIKI MFG. CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KUDO, SHINICHI, AZUMA, TAKAHIRO, NAITO, HAYATO, YONEYAMA, HIDEKAZU, FUJITA, YUJI, SATO, TSUNEO, TSURUTA, TOSHIFUMI
Publication of US20040130808A1 publication Critical patent/US20040130808A1/en
Application granted granted Critical
Publication of US6856469B2 publication Critical patent/US6856469B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/035—DC motors; Unipolar motors
    • H02K41/0352—Unipolar motors
    • H02K41/0354—Lorentz force motors, e.g. voice coil motors
    • H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path

Definitions

  • the present invention relates to lens driving devices that are generally used for cameras such as cameras mounted on cellular phones. More particularly, the present invention relates to the technology to drive, position and retain a lens or a lens unit in an optical axial direction.
  • a camera device that is mounted on a cellular phone (i.e., portable telephone) with camera typically uses a driving system that drives a lens between two positions, an ordinary photographing position where an ordinary photographing takes place, and a close-up photographing position where the lens is positioned slightly closer to subject by a predetermined distance than its position in the ordinary photographing.
  • a lens driving device equipped with a motor on equipment such as cellular phones with camera.
  • lens driving devices of the type which directly, magnetically drives a lens is mounted on cellular phones with camera.
  • a lens driving device of a magnetic drive type is typically equipped with a cylindrical case that retains a lens, a ring-shaped drive magnet mounted on an outer circumference of the case, and a driving coil that opposes the driving magnet. Energization of the driving coil is controlled to magnetically drive the cylindrical case that retains the lens in an optical axis direction to a desired position, and the cylindrical case is magnetically retained at the desired position.
  • another lens driving device may be equipped with a case having a lens mounted thereon, wherein the case is rotated in its circumferential direction by the driving device such that the case is moved in an optical axis direction.
  • the lens driving device of the former type namely, the lens driving device in which the case that retains the lens is magnetically driven in an optical axis direction to a desired position and the case is magnetically retained at the position
  • the driving coil needs to be energized during that period.
  • the lens driving device of the former type has a problem, namely, it consumes a large amount of power, and therefore is not suitable for mounting on cellular phones with camera.
  • the lens driving device in which the case is rotated in its circumferential direction to move the case in a rotational axis direction (i.e., optical axis direction)
  • the lens driving device of the latter type has a complex structure and includes a large number of components, and therefore is not suitable for mounting on cellular phones with camera.
  • the present invention relates to a lens driving device that has a relatively simple structure and yet reduce power consumption for driving, positioning and retaining a lens.
  • a lens driving device includes a moving body equipped with a lens, and a fixed body that moves the moving body in an optical axis direction of the lens between a first lens retaining position and a second lens retaining position and retains the moving body at the two lens retaining positions.
  • the moving body is equipped with the lens and a driving magnet attached to the lens.
  • the fixed body is equipped with a driving coil that forms together with the driving magnet a magnetic circuit, and a magnetic member that is disposed opposite at least one of two end sections in the optical axis direction of the driving magnet.
  • the moving body When energization of the driving coil stops, the moving body is retained at the first lens retaining position by magnetic attraction caused by the driving magnet and the magnetic member; and the driving coil is energized to move the moving body between the first lens retaining position and the second lens retaining position.
  • the driving coil when the lens is to be moved between the first lens retaining position and the second lens retaining position, the driving coil is energized to magnetically drive the moving body.
  • energization of the driving coil is stopped, and a magnetic attraction force between the driving magnet and the magnetic member is used to retain the moving body at the first lens retaining position. Accordingly, while the lens is retained at the first lens retaining position, the driving coil does not need to be energized, and thus the power consumption can be lowered.
  • the magnetic member may include a first magnetic member that is disposed on a side adjacent to the first lens retaining position and a second magnetic member that is disposed on a side adjacent to the second lens retaining position.
  • the moving body may be retained at the first lens retaining position by magnetic attraction caused by the driving magnet and the first magnetic member when energization of the driving coil is stopped, or retained at the second lens retaining position by magnetic attraction caused by the driving magnet and the second magnetic member when energization of the driving coil is stopped.
  • the fixed body may preferably be equipped with a spring member that moveably supports the moving body in the optical axis direction.
  • the spring force of the spring member can be used, for example, to retain the lens at the first lens retaining position, to move the lens from the first lens retaining position to the second lens retaining position, to move the lens from the second lens retaining position to the first lens retaining position, or to retain the lens at the second lens retaining position.
  • the moving body may preferably be equipped with a back yoke provided on a backside of the driving magnet opposite the driving coil.
  • a back yoke provided on a backside of the driving magnet opposite the driving coil.
  • the driving coil may preferably be formed in a cylindrical shape that encircles the moving body, and the fixed body may preferably be equipped with a stator yoke having a generally rectangular cross section, a cornered channel-shaped cross section or a generally C-letter shaped cross section that generally encircles the driving coil.
  • FIGS. 1 ( a ), 1 ( b ) and 1 ( c ) schematically show cross-sectional views of a lens driving device in accordance with an embodiment of the present invention in a state in which a lens is retained at a first lens retaining position, a state in which the lens is in the course of moving from the first lens retaining position to a second lens retaining position, and a state in which the lens is retained at the second lens retaining position, respectively.
  • FIG. 2 shows an enlarged perspective view of parts of the lens driving device shown in FIGS. 1 ( a ), 1 ( b ) and 1 ( c ).
  • FIG. 3 shows an enlarged perspective view of parts of the lens driving device in accordance with another embodiment of the present invention.
  • FIGS. 1 ( a ), 1 ( b ) and 1 ( c ) schematically show cross-sectional views of a lens driving device in accordance with an embodiment of the present invention in a state in which a lens is retained at a first lens retaining position, a state in which the lens is in the course of moving from the first lens retaining position to a second lens retaining position, and a state in which the lens is retained at the second lens retaining position, respectively.
  • FIG. 2 shows an enlarged perspective view of parts of the lens driving device shown in FIGS. 1 ( a ), 1 ( b ) and 1 ( c ).
  • the lens driving device 1 may be used to drive a lens 2 in a thin camera that is mounted on a portable device such as a cellular phone with camera.
  • the lens driving device 1 is generally formed from a lens moving body 3 that is equipped with the lens 2 , a fixed body 4 that moves the moving body 3 in an optical axis direction F (i.e., a focusing direction) of the lens 2 between a first lens retaining position P 1 and a second lens retaining position 2 and retains the moving body 3 at the two lens retaining positions P 1 and P 2 , and a case 5 that stores the moving body 3 and the fixed body 4 .
  • the case 5 is formed with an aperture on the subject side (on the upper side of the figure, and a light path on the device interior side (on the lower side of the figure).
  • the lens moving body 3 is equipped with the lens 2 , and a driving magnet 6 in a ring shape that encircles the outer circumference of the lens 2 .
  • the driving magnet 6 and the lens 2 are attached to each other with a ring-shaped back yoke 7 interposed between them.
  • the back yoke 7 also serves as a lens-barrel of the lens 2 .
  • the fixed body 4 may be equipped with a spring member 50 (see FIG. 3 ) such as a leaf spring or a coil spring that resiliently and moveably supports the lens 2 in the optical axis direction F, a cylindrical driving coil 8 that encircles the outer circumference of the driving magnet 6 , a stator yoke 11 having a channel-shaped cross section or a C letter-shaped cross section that generally encircles the driving coil 8 , and first and second washers 9 and 10 that are disposed opposite end faces 61 and 62 of the driving magnet 6 on the sides of the first and second lens retaining positions P 1 and P 2 , respectively.
  • a spring member 50 such as a leaf spring or a coil spring that resiliently and moveably supports the lens 2 in the optical axis direction F
  • a cylindrical driving coil 8 that encircles the outer circumference of the driving magnet 6
  • a stator yoke 11 having a channel-shaped cross section or a C letter-shaped cross section that generally encircles the driving coil 8
  • the stator yoke 11 has a generally rectangular cross section that opens at one side to generally define a cornered C letter-shape.
  • the first and second washers 9 and 10 are both made of ring-shaped magnetic members that may preferably be made of ferromagnetic material.
  • Spacer members 12 and 13 that may preferably be made of non-magnetic flexible material, are attached to end faces of the first and second washers 9 and 10 which oppose the end faces 61 and 62 of the driving magnet 6 , respectively.
  • measurements of the components described above may be as follows:
  • Neodymium-plastic magnet is used as the driving magnet 6 , whose coercive force (bHc) is 448 kA/m or greater.
  • the driving coil 8 is structured to generate a thrust of 100 mN or greater.
  • the lens 2 is driven as follows:
  • the lens 2 (moving body 3 ) is at the first lens retaining position P 1 , and energization of the driving coil 8 is stopped in this state.
  • the driving magnet 6 and the first magnetic member 9 are magnetically attracted to each other through the spacer member 12 , such that the moving body 3 is retained at the first lens retaining position P 1 . Accordingly, in this state, subjects can be photographed with the cellular phone with camera.
  • the driving coil 8 When the lens 2 (moving body 3 ) is moved from the current state, namely, the first lens retaining position P 1 , to the second lens retaining position P 2 , the driving coil 8 is energized. As a result, as indicated in FIG. 1 ( b ), the driving magnet 6 is separated from the first magnetic member 9 by a magnetic force generated by the driving coil 8 and the driving magnet 6 , such that the moving element 3 moves to the second lens retaining position P 2 as indicated in FIG. 1 ( c ). As a result, the driving magnet 6 and the second magnetic member 10 are brought in a state in which the driving magnet 6 and the second magnetic member 10 are magnetically attracted to each other through the spacer member 13 . In this instance, the driving magnet 6 abuts against the spacer member 13 , and its impact is absorbed by the spacer member 13 .
  • the moving body 3 is retained at the second lens retaining position P 2 when the energization of the driving coil 8 is stopped. Accordingly, a photograph can be normally taken by the cellular phone with camera.
  • the driving coil 8 when the lens 2 is to be moved between the first lens retaining position P 1 and the second lens retaining position P 2 , the driving coil 8 is energized to magnetically drive the moving body 3 ; and when the lens 2 is to be retained at the first lens retaining position P 1 or the second lens retaining position P 2 , the energization of the driving coil 8 is stopped to use the magnetic attraction force between the driving magnet 6 and the magnetic member 9 or 10 , respectively. Accordingly, while the lens 2 is retained at the first lens retaining position P 1 or the second lens retaining position P 2 , the driving coil 8 does not need to be energized, and therefore the power consumption can be suppressed to low levels.
  • the fixed body 4 is equipped with the spring member 50 that moveably supports the moving body 3 in the optical axis direction F, and the spring force (i.e., thrust) of the spring member 50 can be used to drive, position and retain the moving body 3 (i.e., the lens 2 ).
  • the spring member 50 is provided such that the thrust of the spring member acts to move the moving body 3 from the first lens retaining position P 1 to the second lens retaining position P 2 .
  • the spring member 50 may be provided such that the thrust of the spring member acts to move the moving body 3 from the second lens retaining position P 2 to the first lens retaining position P 1 .
  • the spring member 50 may be provided such that the thrust of the spring member acts to retain the moving body 3 generally at mid-point between the first lens retaining position P 1 and the second lens retaining position P 2 .
  • two spring members may be provided at the two end faces 61 and 62 of the driving magnet 6 .
  • the spring force of the spring member can be used to move the lens 2 from the first lens retaining position P 1 to the second lens retaining position P 2 , and to retain the lens 2 at the second lens retaining position P 2 .
  • the spring force of the spring member can be used to move the lens 2 from the second lens retaining position P 2 to the first lens retaining position P 1 , and to retain the lens 2 at the first lens retaining position P 1 .
  • the spring force of the spring member can be used to move the lens 2 from the first lens retaining position P 1 to the second lens retaining position P 2 , and to move the lens 2 from the second lens retaining position P 2 to the first lens retaining position P 1 .
  • the driving magnet 6 is mounted on the lens 2 that is a moving body, and the driving coil 8 is disposed on the fixed body 4 to thereby form a plunger (moving magnet) type.
  • the driving coil may be attached on the side of the lens 2 that is a moving body, and the driving magnet may be disposed on the fixed body 4 to form a voice coil (moving coil) type.
  • the plunger type of the present embodiment may be simpler in structure than the voice coil type.
  • the lens driving device in accordance with an embodiment of the present invention energizes the driving coil to magnetically drive the moving body when the moving body equipped with the lens is moved between the first lens retaining position and the second lens retaining position.
  • the driving coil does not need to be energized while the lens is retained at the first or second lens retaining position, the power consumption can be suppressed to lower levels.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Lens Barrels (AREA)
  • Studio Devices (AREA)
US10/695,409 2002-12-04 2003-10-27 Lens driving device Expired - Fee Related US6856469B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002-353040 2002-12-04
JP2002353040A JP4250409B2 (ja) 2002-12-04 2002-12-04 レンズ駆動装置

Publications (2)

Publication Number Publication Date
US20040130808A1 US20040130808A1 (en) 2004-07-08
US6856469B2 true US6856469B2 (en) 2005-02-15

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Application Number Title Priority Date Filing Date
US10/695,409 Expired - Fee Related US6856469B2 (en) 2002-12-04 2003-10-27 Lens driving device

Country Status (5)

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US (1) US6856469B2 (ja)
JP (1) JP4250409B2 (ja)
KR (1) KR20040048809A (ja)
CN (1) CN1504822A (ja)
TW (1) TWI232310B (ja)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040104722A1 (en) * 2001-07-30 2004-06-03 Fujitsu Limited Magnetic head tester
US20040174614A1 (en) * 2003-01-02 2004-09-09 Hovanky Thao D. Systems and methods for actuating lens assemblies
US20040183907A1 (en) * 2003-01-02 2004-09-23 Hovanky Thao D. Optical block assembly
US20050195508A1 (en) * 2004-03-03 2005-09-08 Lg Electronics Inc. Device for reducing deteriroation of image quality in display using laser
US20070039015A1 (en) * 2005-07-29 2007-02-15 Industrial Technology Research Institute Optical devices
US20070097531A1 (en) * 2005-11-03 2007-05-03 Industrial Technology Research Institute Optical devices
US20070097532A1 (en) * 2005-11-03 2007-05-03 Industrial Technology Research Institute Optical devices
US20070159550A1 (en) * 2006-01-12 2007-07-12 Lite-On Technology Corp. Digital Camera Module
US20070200442A1 (en) * 2006-02-09 2007-08-30 Wen-Chia Chang Magnetic levitation actuating motor
US20070274699A1 (en) * 2006-05-29 2007-11-29 Young Optics Inc. Lens module
US20080010651A1 (en) * 2006-07-05 2008-01-10 Industrial Technology Research Institute Optical devices
US20080024016A1 (en) * 2006-07-28 2008-01-31 Industrial Technology Research Institute Actuator
US20080069554A1 (en) * 2006-09-18 2008-03-20 Shih-Hsien Huang Lens driving device
WO2008063019A1 (en) * 2006-11-23 2008-05-29 Lg Innotek Co., Ltd Lens driving apparatus
US20080192368A1 (en) * 2007-02-05 2008-08-14 Nidec Sankyo Corporation Lens drive device
US20080212212A1 (en) * 2007-02-15 2008-09-04 Olympus Corporation Magnetic coupled actuator
US20080284255A1 (en) * 2007-05-15 2008-11-20 Industrial Technology Research Institute Voice coil motors and pre-compression generation devices thereof
US20080297934A1 (en) * 2007-06-04 2008-12-04 Industrial Technology Research Institute Optical actuator
US20090022487A1 (en) * 2007-07-18 2009-01-22 Foxconn Technology Co., Ltd. Two-step auto focus camera and method for driving the same
US20090045896A1 (en) * 2007-08-13 2009-02-19 Industrial Technology Research Institute Electromagnetic transmission device
CN100543506C (zh) * 2006-07-17 2009-09-23 财团法人工业技术研究院 光学装置
US20100046935A1 (en) * 2006-10-27 2010-02-25 Sony Corporation Camera module
US7751134B2 (en) 2006-10-31 2010-07-06 Panasonic Corporation Lens actuator, and electronic device using the same
US20110163616A1 (en) * 2010-01-05 2011-07-07 Lg Innotek Co., Ltd. Voice coil motor
US20120134033A1 (en) * 2010-11-26 2012-05-31 Hiroyuki Watanabe Lens driving device
US20130162851A1 (en) * 2011-12-27 2013-06-27 Nidec Copal Corporation Optical image stabilizer and lens driving apparatus
US20140184892A1 (en) * 2005-02-28 2014-07-03 DigitalOptics Corporation MEMS Autofocus camera systems and methods
TWI454023B (zh) * 2011-01-19 2014-09-21 Wah Hong Ind Corp 導磁裝置及音圈馬達
US8863913B2 (en) 2010-12-15 2014-10-21 Samsung Electronics Co., Ltd. Apparatus for transferring optical element including brake
US9900486B2 (en) 2015-04-30 2018-02-20 Samsung Electronics Co., Ltd. Optical device

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006058662A (ja) * 2004-08-20 2006-03-02 Shicoh Eng Co Ltd レンズ駆動装置及び小型カメラ
KR100684037B1 (ko) * 2004-09-03 2007-02-16 주식회사 파워로직스 렌즈 구동기구
JP4011576B2 (ja) * 2004-10-20 2007-11-21 株式会社タムロン アクチュエータ及びそれを備えたレンズユニット及びカメラ
CN100529943C (zh) * 2004-12-11 2009-08-19 鸿富锦精密工业（深圳）有限公司 自动对焦镜头模组
CN100517047C (zh) * 2004-12-17 2009-07-22 鸿富锦精密工业（深圳）有限公司 两段式对焦装置
JP4537866B2 (ja) * 2005-02-28 2010-09-08 日本電産サンキョー株式会社 レンズ駆動装置
KR100649638B1 (ko) * 2005-04-18 2006-11-27 삼성전기주식회사 조립성이 향상된 렌즈 이송장치
CN100437333C (zh) * 2005-07-20 2008-11-26 华硕电脑股份有限公司 一种镜头模块及其电子装置
JP4495705B2 (ja) * 2006-08-31 2010-07-07 日本電産サンキョー株式会社 レンズ駆動装置
KR100845334B1 (ko) * 2005-12-12 2008-07-10 유성정밀 주식회사 소형 광학렌즈의 자동초점 조절장치
TWM295754U (en) * 2006-01-05 2006-08-11 Topray Technologies Inc Focus driver
GB0600912D0 (en) * 2006-01-17 2006-02-22 1 Ltd Miniature camera lens arrangement
TWI293130B (en) * 2006-01-19 2008-02-01 Asustek Comp Inc Camera module and electric device using the same
TWI308991B (en) 2006-03-08 2009-04-21 Asustek Comp Inc Compact camera module
JP2008032768A (ja) * 2006-07-26 2008-02-14 Matsushita Electric Ind Co Ltd レンズアクチュエータ
CN103269144B (zh) 2006-12-13 2016-12-28 Lg伊诺特有限公司 镜头驱动装置
KR101209956B1 (ko) * 2006-12-13 2012-12-07 엘지이노텍 주식회사 렌즈 구동용 모터
CN101206296B (zh) * 2006-12-22 2010-05-19 鸿富锦精密工业（深圳）有限公司 镜头模组
JP2008180960A (ja) * 2007-01-25 2008-08-07 Alps Electric Co Ltd レンズ駆動装置
JP2008197345A (ja) * 2007-02-13 2008-08-28 Tdk Taiwan Corp マイクロレンズ２段式フォーカス構造
JP4992478B2 (ja) * 2007-03-07 2012-08-08 株式会社ニコン ブレ補正ユニット、レンズ鏡筒、カメラ
JP2008298805A (ja) * 2007-05-29 2008-12-11 Alps Electric Co Ltd レンズ駆動装置
US7656460B2 (en) * 2007-08-21 2010-02-02 Sony Ericsson Mobile Communications Ab Autofocus assembly that adjusts a lens in the optical axis direction by alignment of holes in a spacing ring that receive ball bearings
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Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4676605A (en) * 1981-07-14 1987-06-30 Canon Kabushiki Kaisha Construction of lens barrel operated by electromagnetic induction
JPH04222444A (ja) 1990-12-21 1992-08-12 Kyocera Corp 円筒体の回転駆動装置
US5289318A (en) * 1990-07-31 1994-02-22 Canon Kabushiki Kaisha Optical apparatus provided with a driving unit for moving a lens
US5373496A (en) * 1992-11-02 1994-12-13 Matsushita Electric Industrial Co., Ltd. Objective lens actuator having rodlike elastic members supporting U-shaped lens holder
US5442490A (en) * 1992-01-27 1995-08-15 Sharp Kabushiki Kaisha Objective lens driving apparatus
US5471100A (en) * 1993-03-30 1995-11-28 Sony Corporation Linear electromagnetic driving apparatus and use of same for lens adjustment
US5488603A (en) * 1993-06-21 1996-01-30 Matsushita Electric Industrial Co., Ltd. Optical information recording reproducing apparatus with first and second electrokinetic transducers at respective distances
US5587846A (en) * 1994-07-15 1996-12-24 Minolta Co., Ltd. Lens moving apparatus
US5638222A (en) * 1994-06-29 1997-06-10 Olympus Optical Co., Ltd. Optical element positioning device
US5705864A (en) * 1993-07-29 1998-01-06 Canon Kabushiki Kaisha Stepping motor
US5739608A (en) * 1996-01-09 1998-04-14 Samsung Electronics Co., Ltd. Actuator for optical pickup
JPH10150759A (ja) 1996-11-15 1998-06-02 Seiko Instr Inc リニアアクチュエータ
US5900995A (en) * 1994-11-25 1999-05-04 Canon Kabushiki Kaisha Driving device and optical apparatus
US6031651A (en) * 1994-05-24 2000-02-29 Canon Kabushiki Kaisha Scanning optical apparatus
JP2000187862A (ja) 1998-12-21 2000-07-04 Seiko Instruments Inc アクチュエータ
US6414777B1 (en) * 1997-05-29 2002-07-02 Canon Kabushiki Kaisha Optical deflection/scanning apparatus

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4676605A (en) * 1981-07-14 1987-06-30 Canon Kabushiki Kaisha Construction of lens barrel operated by electromagnetic induction
US5289318A (en) * 1990-07-31 1994-02-22 Canon Kabushiki Kaisha Optical apparatus provided with a driving unit for moving a lens
JPH04222444A (ja) 1990-12-21 1992-08-12 Kyocera Corp 円筒体の回転駆動装置
US5442490A (en) * 1992-01-27 1995-08-15 Sharp Kabushiki Kaisha Objective lens driving apparatus
US5373496A (en) * 1992-11-02 1994-12-13 Matsushita Electric Industrial Co., Ltd. Objective lens actuator having rodlike elastic members supporting U-shaped lens holder
US5471100A (en) * 1993-03-30 1995-11-28 Sony Corporation Linear electromagnetic driving apparatus and use of same for lens adjustment
US5488603A (en) * 1993-06-21 1996-01-30 Matsushita Electric Industrial Co., Ltd. Optical information recording reproducing apparatus with first and second electrokinetic transducers at respective distances
US5705864A (en) * 1993-07-29 1998-01-06 Canon Kabushiki Kaisha Stepping motor
US6031651A (en) * 1994-05-24 2000-02-29 Canon Kabushiki Kaisha Scanning optical apparatus
US5638222A (en) * 1994-06-29 1997-06-10 Olympus Optical Co., Ltd. Optical element positioning device
US5587846A (en) * 1994-07-15 1996-12-24 Minolta Co., Ltd. Lens moving apparatus
US5900995A (en) * 1994-11-25 1999-05-04 Canon Kabushiki Kaisha Driving device and optical apparatus
US5739608A (en) * 1996-01-09 1998-04-14 Samsung Electronics Co., Ltd. Actuator for optical pickup
JPH10150759A (ja) 1996-11-15 1998-06-02 Seiko Instr Inc リニアアクチュエータ
US6414777B1 (en) * 1997-05-29 2002-07-02 Canon Kabushiki Kaisha Optical deflection/scanning apparatus
JP2000187862A (ja) 1998-12-21 2000-07-04 Seiko Instruments Inc アクチュエータ

Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040104722A1 (en) * 2001-07-30 2004-06-03 Fujitsu Limited Magnetic head tester
US7196512B2 (en) * 2001-07-30 2007-03-27 Fujitsu Limited Magnetic head tester
US7583289B2 (en) 2003-01-02 2009-09-01 Ge Security, Inc. Optical block assembly
US20040174614A1 (en) * 2003-01-02 2004-09-09 Hovanky Thao D. Systems and methods for actuating lens assemblies
US20040183907A1 (en) * 2003-01-02 2004-09-23 Hovanky Thao D. Optical block assembly
US7113351B2 (en) * 2003-01-02 2006-09-26 Covi Technologies, Inc. Systems and methods for actuating lens assemblies
US20050195508A1 (en) * 2004-03-03 2005-09-08 Lg Electronics Inc. Device for reducing deteriroation of image quality in display using laser
US7116017B2 (en) * 2004-03-03 2006-10-03 Lg Electronics Inc. Device for reducing deterioration of image quality in display using laser
US9625673B2 (en) * 2005-02-28 2017-04-18 DigitalOptics Corporation MEMS Autofocus camera systems and methods
US9291875B2 (en) * 2005-02-28 2016-03-22 DigitalOptics Corporation MEMS Autofocus camera systems and methods
US20140184892A1 (en) * 2005-02-28 2014-07-03 DigitalOptics Corporation MEMS Autofocus camera systems and methods
US20070039015A1 (en) * 2005-07-29 2007-02-15 Industrial Technology Research Institute Optical devices
US7365922B2 (en) 2005-07-29 2008-04-29 Industrial Technology Research Institute Optical devices
US20070097531A1 (en) * 2005-11-03 2007-05-03 Industrial Technology Research Institute Optical devices
US20070097530A1 (en) * 2005-11-03 2007-05-03 Industrial Technology Research Institute Optical devices
US20070097532A1 (en) * 2005-11-03 2007-05-03 Industrial Technology Research Institute Optical devices
US20070159550A1 (en) * 2006-01-12 2007-07-12 Lite-On Technology Corp. Digital Camera Module
US7675565B2 (en) * 2006-01-12 2010-03-09 Lite-On Technology Corp. Digital camera module with lens moveable via radially magnetized magnets
US20070200442A1 (en) * 2006-02-09 2007-08-30 Wen-Chia Chang Magnetic levitation actuating motor
US20070274699A1 (en) * 2006-05-29 2007-11-29 Young Optics Inc. Lens module
US20080010651A1 (en) * 2006-07-05 2008-01-10 Industrial Technology Research Institute Optical devices
US7652835B2 (en) 2006-07-05 2010-01-26 Industrial Technology Research Institute Optical devices
CN100543506C (zh) * 2006-07-17 2009-09-23 财团法人工业技术研究院 光学装置
US7638906B2 (en) 2006-07-28 2009-12-29 Industrial Technology Research Institute Actuator
US20080024016A1 (en) * 2006-07-28 2008-01-31 Industrial Technology Research Institute Actuator
US20080069554A1 (en) * 2006-09-18 2008-03-20 Shih-Hsien Huang Lens driving device
US20100046935A1 (en) * 2006-10-27 2010-02-25 Sony Corporation Camera module
US7978969B2 (en) 2006-10-27 2011-07-12 Sony Corporation Camera module
US7751134B2 (en) 2006-10-31 2010-07-06 Panasonic Corporation Lens actuator, and electronic device using the same
US9939606B2 (en) 2006-11-23 2018-04-10 Lg Innotek Co., Ltd. Lens driving apparatus
US9921387B2 (en) 2006-11-23 2018-03-20 Lg Innotek Co., Ltd. Lens driving apparatus
US10983298B2 (en) 2006-11-23 2021-04-20 Lg Innotek Co., Ltd. Lens driving apparatus
US11754800B2 (en) 2006-11-23 2023-09-12 Lg Innotek Co., Ltd. Lens driving apparatus
TWI457630B (zh) * 2006-11-23 2014-10-21 Lg Innotek Co Ltd 鏡片驅動裝置
WO2008063019A1 (en) * 2006-11-23 2008-05-29 Lg Innotek Co., Ltd Lens driving apparatus
US8451553B2 (en) 2006-11-23 2013-05-28 Lg Innotek Co., Ltd. Lens driving apparatus
CN102223047B (zh) * 2006-11-23 2013-05-01 Lg伊诺特有限公司 镜头驱动装置
US12204166B2 (en) 2006-11-23 2025-01-21 Lg Innotek Co., Ltd. Lens driving apparatus
US7885023B2 (en) 2006-11-23 2011-02-08 Lg Innotek Co., Ltd. Lens driving apparatus
US20110051264A1 (en) * 2006-11-23 2011-03-03 Lg Innotek Co., Ltd. Lens driving apparatus
US20080192368A1 (en) * 2007-02-05 2008-08-14 Nidec Sankyo Corporation Lens drive device
US7518812B2 (en) * 2007-02-05 2009-04-14 Nidec Sankyo Corporation Lens drive device
US20080212212A1 (en) * 2007-02-15 2008-09-04 Olympus Corporation Magnetic coupled actuator
US7511905B2 (en) * 2007-02-15 2009-03-31 Olympus Corporation Magnetic coupled actuator
US20080284255A1 (en) * 2007-05-15 2008-11-20 Industrial Technology Research Institute Voice coil motors and pre-compression generation devices thereof
US7679225B2 (en) 2007-05-15 2010-03-16 Industrial Technology Research Institute Voice coil motors and pre-compression generation devices thereof
US20080297934A1 (en) * 2007-06-04 2008-12-04 Industrial Technology Research Institute Optical actuator
US7595944B2 (en) 2007-06-04 2009-09-29 Industrial Technology Research Institute Optical actuator
US7697833B2 (en) * 2007-07-18 2010-04-13 Foxconn Technology Co., Ltd. Two-step auto focus camera and method for driving the same
US20090022487A1 (en) * 2007-07-18 2009-01-22 Foxconn Technology Co., Ltd. Two-step auto focus camera and method for driving the same
US20090045896A1 (en) * 2007-08-13 2009-02-19 Industrial Technology Research Institute Electromagnetic transmission device
US7728705B2 (en) 2007-08-13 2010-06-01 Industrial Technology Research Institute Electromagnetic transmission device
US20110163616A1 (en) * 2010-01-05 2011-07-07 Lg Innotek Co., Ltd. Voice coil motor
US8456041B2 (en) * 2010-01-05 2013-06-04 Lg Innotek Co., Ltd. Voice coil motor
US8488262B2 (en) * 2010-11-26 2013-07-16 Nidec Copal Corporation Lens driving device
US20120134033A1 (en) * 2010-11-26 2012-05-31 Hiroyuki Watanabe Lens driving device
US8863913B2 (en) 2010-12-15 2014-10-21 Samsung Electronics Co., Ltd. Apparatus for transferring optical element including brake
TWI454023B (zh) * 2011-01-19 2014-09-21 Wah Hong Ind Corp 導磁裝置及音圈馬達
US8730595B2 (en) * 2011-12-27 2014-05-20 Nidec Copal Corporation Optical image stabilizer and lens driving apparatus
US20130162851A1 (en) * 2011-12-27 2013-06-27 Nidec Copal Corporation Optical image stabilizer and lens driving apparatus
US9900486B2 (en) 2015-04-30 2018-02-20 Samsung Electronics Co., Ltd. Optical device

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JP4250409B2 (ja) 2009-04-08
US20040130808A1 (en) 2004-07-08

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